Inflatable bathtub



FIG. 1 is a top plan view of an inflatable bathtub showing my newdesign;

FIG. 2 is a side elevational view thereof, the opposite side being amirror image of the side shown;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left end elevational view thereof; and,

FIG. 5 is a right end elevational view thereof.

The ornamental design for an inflatable bathtub, as shown and described.